Use when designing, auditing, polishing, improving, or codifying frontend UI — websites, dashboards, landing pages, components, design systems
SkillScore42Maintained
On-demandOn-demand: invoked explicitly — never occupies your agent's context until called.
◆Design & UX Review pack
Last verified 9/23/2026
What it changes
Passed 5 of 13 test cases with the skill, and 5 of 13 without it.
Without skill38%
With skill42%
Checks it passed that the model alone missed
Displays Status: DONE for terminal success.
Loads reference/doctor.md from the bundled base directory.
Requires passing the --run flag to candidate stage commands.
and 2 more in the full report
5 fixed5 passed either way10 still failing4 broke
Pass-rate lift
+4 pp
Tokens
+273%
Agent turns
0%
Response time
-52%
Model gemini-3.6-flashMeasured 9/23/2026v510 of 24 cases passed with skill · 13 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 5
Prompt
During Phase 4 of codifying design assets from `./src/components`, what flag and parameter must be passed to candidate stage commands to associate candidates with the active run?
What was checked, without and with the skill
Checked
Without skill
With skill
Requires passing the --run flag to candidate stage commands.
Missed
Passed
case-13 · gemini-3.6-flash · 9/23/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
Retain the resolved parent as <impeccable-base> for the entire Run. Every path in the bundled Skill and references is relative to that directory; substitute the concrete path before reading a reference or running a script.
Rules:
Never resolve or invoke another Skill named impeccable.
Never run npx impeccable install, npx impeccable update, or depend on an external Impeccable package during execution.
Load the bundled SKILL.md, then only the single command/reference file it routes to. Respect its deferred-reading rules.
Run node <impeccable-base>/scripts/context.mjs once per session from the user's project cwd. Do not rerun it after init.
Preserve platform routing: audit.native.md / adapt.native.md for native projects; live and the HTML detector are web-only.
Preserve bounded verification: one batched inspection/fix pass and at most one confirmation pass. Do not recreate the retired open-ended refine loop.
If the bundled core or a required bundled file is missing, stop with E001/E003 and repair the Maestro installation; never fetch or install another Skill as recovery.
Impeccable core updates ship only through Maestro source/release updates. Never offer an upstream package update during design work.
Bundled core synchronized from upstream Impeccable Skill 4.1.3 (pbakaus/impeccable@4c5243f) and adapted for Maestro. The bundled copy remains authoritative until Maestro updates it.
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